Search results for "validation"

Psychometrische Güte der Selbst- und Fremdbeurteilungsinstrumente ADHS-SB und Wender-Reimherr-Interview bei Senioren mit Aufmerksamkeitsdefizit-/Hype…

2016

Zusammenfassung Ziel der Studie und Methodik Die Anwendbarkeit der etablierten ADHS-Verfahren für Erwachsene, ADHS-SB und Wender-Reimherr-Interview, im Senium wurde an einer Stichprobe von 324 Personen im Alter zwischen 60 und 99 Jahren überprüft. Ergebnisse Die beiden Verfahren weisen für den Einsatz bei SeniorInnen eine geringere psychometrische Güte auf im Vergleich zur Anwendung bei Erwachsenen im jungen und mittleren Lebensalter. Es zeigt sich eine hohe Korrelation beider Verfahren mit der klinischen Beurteilung der Experten bei Personen im Seniorenalter. Schlussfolgerung Als Ergänzung zur ausführlichen klinischen Exploration können die ADHS-SB und das WRI auch im Senium als valide Dia…

Cross‐national validation of the Social Media Disorder‐scale : Findings from adolescents from 44 countries

2022

Background and aims There is currently no cross-national validation of a scale that measures problematic social media use (SMU). The present study investigated and compared the psychometric properties of the Social Media Disorder (SMD)-scale among young adolescents from different countries. Design Validation study. Setting and participants Data came from 222,532 adolescents from 44 countries participating in the Health Behaviour in School-aged Children (HBSC) survey (2017/2018). The HBSC survey was conducted in the European region and Canada. Participants were on average 13.5 years old (SD = 1.6) and 51.2% were girls. Measurement Problematic SMU was measured using the 9-item SMD-scale with …

Analysis of a full-scale integral test in PERSEO facility by using TRACE code

2017

Over the last decades a lot of experimental researches have been done to increase the reliability of passive decay heat removal systems implementing in-pool immersed heat exchanger. In this framework, a domestic research program on innovative safety systems was carried out leading the design and the development of the PERSEO facility at the SIET laboratories. The configuration of the system consists of an heat exchanger contained in a small pool which is connected both at the bottom and at the top to a large water reservoir pool. Within the frame of a national research program funded by the Italian minister of economic development, the DEIM department of the University of Palermo in coopera…

Medium fidelity modelling of loads in wind farms under non-neutral ABL stability conditions – a full-scale validation study

2017

Validation transculturelle des critères d'évaluation rapportés par le patient dans l'arthrose des membres inférieurs

2010

In joint diseases, Patient-Reported Outcomes (PROs) are now critical outcome measures, required by health authorities and regulatory agencies. Cross-cultural adaptation and validation of the psychometric properties of such PROs are needed in order to use them in international therapeutic trials. Thanks to this complex process of cross-cultural validation, the PRO in the target language can take into account the specific socio-cultural features and the linguistic equivalences. The aim of this thesis was to undertake the cross-cultural validation of PROs specifically developed for knee and hip disorders. After explaining the published recommendations for cross-cultural adaptation and then con…

Soil erosion susceptibility assessment and validation using a geostatistical multivariate approach: a test in southern Sicily

2008

A certain number of studies have been carried out in recent years that aim at developing and applying a model capable of assessing water erosion of soil. Some of these have tried to quantitatively evaluate the volumes of soil loss, while others have focused their efforts on the recognition of the areas most prone to water erosion processes. This article presents the results of a research whose objective was that of evaluating water erosion susceptibility in a Sicilian watershed: the Naro river basin. A geomorphological study was carried out to recognize the water erosion landforms and define a set of parameters expressing both the intensity of hydraulic forces and the resistance of rocks/so…

Discharge estimation in open channels by means of water level hydrograph analysis

2010

A new methodology, based on the synchronous measurement of stage hydrographs in two river sections located some kilometers from each other, was developed to estimate the discharge hydrograph in the upstream section. The methodology is based on the one-parameter calibration of a numerical flow routing algorithm, solving the Saint-Venant equations in diffusive or complete form. The methodology was validated using results of laboratory experiments carried out at the Polytechnic of Bari University. A known discharge hydrograph was generated in the upstream tank of a rectangular flume, where two water level sensors were located. Two different bed materials have been used, to account for differen…

Validating erosion rate estimates provided by caesium-137 measurements for two small forested catchments in Calabria, southern Italy

2003

Increasing concern for problems of soil degradation and the off-site impacts of accelerated erosion has generated a need for improved methods of estimating rates and patterns of soil erosion by water. The use of environmental radionuclides, particularly 137 Cs, to estimate erosion rates has attracted increased attention and the approach has been shown to possess several important advantages. However, the use of 137 Cs measurements to estimate erosion rates introduces one important uncertainty, namely, the need to employ a conversion model or relationship to convert the measured reduction in the 137 Cs inventory to an estimate of the erosion rate. There have been few attempts to validate the…

Simplified Probabilistic-Topologic Model for Reproducing Hillslope Rill Network Surface Runoff

2015

AbstractThis work presents a simplified probabilistic-topologic model for reproducing rill network surface runoff on a square-plane hillslope. The model requires only two parameters: the first is related to the production capacity of overland flow of the hillslope, at the initial conditions of the process, and the second depends on the sinuosity of the rill network. From a hydrological point of view, the following parameters account for the effects that essentially delineate the hydrologic response of a natural hillslope: rainfall intensity, hillslope roughness, and slope. Obviously, the reliability of the model is pending experimental validation that has only just begun. However, a prelimi…

A Novel System for Multi-level Crohn’s Disease Classification and Grading Based on a Multiclass Support Vector Machine

2020

Crohn’s disease (CD) is a chronic inflammatory condition of the gastrointestinal tract that can highly alter patient’s quality of life. Diagnostic imaging, such as Enterography Magnetic Resonance Imaging (E-MRI), provides crucial information for CD activity assessment. Automatic learning methods play a fundamental role in the classification of CD and allow to avoid the long and expensive manual classification process by radiologists. This paper presents a novel classification method that uses a multiclass Support Vector Machine (SVM) based on a Radial Basis Function (RBF) kernel for the grading of CD inflammatory activity. To validate the system, we have used a dataset composed of 800 E-MRI…